| abstract |
The present invention relates to a polybenzoxazine precursor and a process for producing the same. More particularly, the present invention relates to a polybenzoxepthone precursor and a process for producing the polybenzoxepthone precursor, , A polybenzoxazine precursor which can ultimately be used for a copper-clad laminate, a semiconductor encapsulant, a printed circuit board, an adhesive, a paint, a mold and the like by making a cured product showing electrical properties and dimensional stability, . |